“Due to the possibility of ongoing police activity, American citizens are advised to exercise caution when travelling through the area,” the embassy said in a brief statement.

The warning comes after the Saudi Arabian police raided hideouts of a ‘terror’ cell linked to the Islamic State group this week, killing two people and arresting five, according to the national security agency.

The State Security Agency said police raided three hideouts in the capital Riyadh and exchanged gunfire in one of them, the SPA news agency reported on Thursday.